Most reformulations are argued about, because only one of the two labels is still findable. Not this one. Core Nutritionals relaunched Core PRE this week — Stack3d reported it on 28 August — and both Supplement Facts panels are still published.
Core’s own product page carries the 2026 panel as of this writing, behind a tab with one image per flavour slot — four of them panels, as below. Five 2025 flavour panels are still live on Core’s store CDN, linked from two old product pages in the Wayback Machine, the earlier captured 20 July 2025.
The published panel
What the two labels say happened
Four dosed actives left: betaine anhydrous 2,500 mg, N-acetyl L-carnitine hydrochloride 1,000 mg, Alpha-GPC 50% 300 mg, AstraGin 50 mg. Three arrived: taurine 2,000 mg, tyrosine 1,000 mg, choline bitartrate 500 mg — 3,850 mg out against 3,500 mg in. Citrulline, beta-alanine and caffeine did not move. Betaine is the exit we would argue about — the most familiar of the four on a pre-workout panel, and a loss sized to the milligram rather than guessed at.
The mineral line went the other way. The 2025 panel declared magnesium at 50 mg, sodium at 50 mg and potassium at 100 mg; the 2026 panel drops magnesium and doubles down on the other two at 200 mg each. The scoop is fractionally bigger too — 16.8 to 17.5 g then, 17.5 to 18.2 g now. So this tub did not get emptier; it got differently loaded — and, with a trademarked ingredient among the four out and three commodity actives in, very likely more cheaply.
The blend that never was
Stack3d’s April 2025 write-up listed the electrolytes as a 200 mg “Electrolyte Blend”. Core’s label did not: it named all three minerals separately with daily values, and 50 plus 50 plus 100 is where that 200 came from. No proprietary blend then, none now.
The write-up describes the old tub
The page’s science section opens on electrolytes under a heading naming “Magnesium (as Magnesium Citrate)” first, gives it a paragraph of its own, and says their inclusion in Core PRE helps support hydration. Magnesium is on none of the four 2026 panels — it was on the 2025 panel at 50 mg. The copy crossed the reformulation; the mineral did not, and one of the page’s 23 numbered references is still a magnesium meta-analysis.
The page lost more in the move: the 2025 version published a downloadable label PDF for every flavour, the 2026 page none. And for Fun Sweets® Orange Cream the Supplement Facts tab serves a photograph of the tub, not a panel.
What it costs
$34.99 across 30 servings is $1.17 a scoop; the subscription price, $27.99, is $0.93. Stack3d trailed the tub at $34.95 days before the 2025 launch and $34.99 on the day: the number has not moved in sixteen months.
Set that beside the premium reformulation we reviewed last week at $2.86 a scoop, where four ingredients carried no stated dose. Core PRE doses every line and charges under half as much — though that tub kept its 2,500 mg of betaine, and this one did not.
The stimulant line
200 mg of caffeine anhydrous is a moderate load, printed rather than implied. Moderate is a fact about the tub, not the person holding it: tolerance varies enormously, and a label counts only its own scoop, never the coffee before it — and it is the stacking, not the printed dose, that does the damage. Stack3d’s 2025 coverage floated doubling the scoop for 400 mg; the panel says one, and one is what this works from. None of this has been evaluated by the FDA, none of it is intended to diagnose, treat, cure or prevent disease, and nothing here is medical advice.
Pros and cons
Verdict
Core PRE 2026 is a good buy at $1.17 a serving, a cheap one at $0.93, and the reformulation did not break it. If you bought it for citrulline, beta-alanine and a caffeine dose that frightens nobody, nothing changed.
If you bought it for the betaine, 2,500 mg is gone and unexplained. If you bought it for the magnesium, that is gone too, and the page selling it has not noticed. And if you compete under anti-doping rules, no certification claim appears on the page at all. Follow the serving printed on the tub.